Indicates which result, or set of results, will be displayed in the worksheet. When returning more than one value, the function must be entered as an array function. Entering a 0 will output: Yield, Clean Price, Accrued Interest, Dirty Price, Macaulay Duration, Modified Duration, Convexity, and Present Value of a Basis Point. Entering a 4 will output: Macaulay Duration, Modified Duration, Convexity, and Present Value of a Basis Point.